Patent AU-2019203869-A1 (AU)
Title: Data isolation in blockchain networks
Inventor: LU XUMING
IPC: H04L9/12
Filed: 2019-03-21
Abstract: INTERNATIONAL APPLICATION PUBLISHED UNDER THE PATENT COOPERATION TREATY (PCT) 
(19) World Intellectual Property 
(1) Organization11111111111111111111111I1111111111111i1111liiiii 
International Bureau (10) International Publication Number 
(43) International Publication Date W O 2019/101246 A2 
31 May 2019 (31.05.2019) W IPO I PCT 
(51) International Patent Classification: Zhejiang 311121 (CN). LU, Xuming; Alibaba Group Legal 
Not classified Department, 5/F, Building 3, No.969 West Wen Yi Road, 
(21) International Application Number: Yuhang District, Hangzhou, Zhejiang 311121 (CN).  
PCT/CN2019/078944 (74) Agent: BEIJING BESTIPR INTELLECTUAL PROP
(22) International Filing Date• ERTY LAW CORPORATION; 
Room 409, Tower B, Ka 
21 March 2019 (21.03.2019) Wah Building, No. 9 Shangdi 3rd Street, Haidian District, 
Beijing 100085 (CN).  
(25) Filing Language: English (81) Designated States (unless otherwise indicated, for every 
(26) Publication Language: English kind ofnational protection available): AE, AG, AL, AM, 
(71) Applicant: ALIBABA GROUP HOLDING LIMITED AO, AT, AU, AZ, BA, BB, BG, BH, BN, BR, BW, BY, BZ, 
[-/CN]; Fourth Floor, One Capital Place, P.O. Box 847, CA, CH, CL, CN, CO, CR, CU, CZ, DE, DJ, DK, DM, DO, 
[-/CN];Fourtlow rOCaymn ptaK aeDZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, 
GeorgeTown,GrandCayman(KY). HR, HU, ID, IL, IN, IR, IS, JO, JP, KE, KG, KH, KN, KP, 
(72) Inventors: SHEN, Chao; Alibaba Group Legal Depart- KR, KW, KZ, LA, LC, LK, LR, LS, LU, LY, MA, MD, ME, 
ment, 5/F, Building 3, No.969 West Wen Yi Road, Yuhang MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, 
District, Hangzhou, Zhejiang 311121 (CN). ZHANG, OM, PA, PE, PG, PH, PL, PT, QA, RO, RS, RU, RW, SA, 
Wenbin; Alibaba Group Legal Department, 5/F, Building 
3, No.969 West Wen Yi Road, Yuhang District, Hangzhou, 
(54) Title: DATA ISOLATION IN BLOCKCHAIN NETWORKS 
402 COMMON PREFIX ROOTHASH 
404 
HASH HASH 
COMMON PREFIX HASH 406B 
H HASH .HASH 
410A COMMONP.. SH............  
-- MNPEIXHS 0 ADDRESS2 STORAGEROOT2 
412A HAH42 
HAS .. AS 42B HASH ... HASH 
400A ADDRESS4 STORAEOT 414B 0xBB. x6 01 AH 414D 
HASHOOT ..hAH416B 13 HAS ... x1 HASH 
41418 
...x3B2B ........ ...x14 .HASH. 48B..x4E06.....x8..x4E3F....0x1 
426A HAS H ... H HASH 
422A Ox3FO6. Ox Ox313F. Ox1A 422B FIG. 4A 
S(57) Abstract: Implementations of this specification include receiving asynchronization request from alight-weight node of the 
blockchain network including an identity of the light-weight node; identifying one or more permissions associated with the identity of 
the light-weight node; determining an original world state structure associated with the block height and including aplurality of account 
Records; identifying based onthe one ormorepermissions, asubset ofthe plurality ofaccount records that areauthorized for access 
-. by the light-weight node; generating an isolated world state structure based on the original world state data structure including only 
~thesubset ofthe pluralityof accountrecords that areauthorized foraccess bythelight-weight node;sending aresponse tothe light
o weight nodethatincludes theisolated world statedata structure.  
42
W O 2019/101246 A211111I||||I||||I|I|||111|1|||||I|III|I|1|11|DI|I||||||||||||||||||||||||||| 
SC, SD, SE, SG, SK, SL, SM, ST, SV, SY, TH, TJ, TM, TN, 
TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW.  
(84) Designated States (unless otherwise indicated, for every 
kind of regional protection available): ARIPO (BW, GH, 
GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, ST, SZ, TZ, 
UG, ZM, ZW), Eurasian (AM, AZ, BY, KG, KZ, RU, TJ, 
TM), European (AL, AT, BE, BG, CH, CY, CZ, DE, DK, 
EE, ES, Fl, FR, GB, GR, HR, HU, IE, IS, IT, LT, LU, LV, 
MC, MK, MT, NL, NO, PL, PT, RO, RS, SE, SI, SK, SM, 
TR), OAPI (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, 
KM, ML, MR, NE, SN, TD, TG).  
Published: 
- upon request of the applicant, before the expiration of the 
time limit referred to in Article 2](2)(a) 
- without international search report and to be republished 
upon receipt of that report (Rule 48.2(g))